Linux Filesystem Alerting Script

This convoluted beauty does a df -h on both a Production and Standby Filesystem (oracle datafile and backup directories) and warns when the threshold of 85% is exceeded and alerts when 95% threshold is exceeded.

############################################################################
#!/bin/ksh
#
# Description : This script does a df -h on oracle and backup directories
#               on both prod and dr servers.  Sends a daily report as
#               well as alerting when thresholds are exceeded.
#
#               13/12/2017
#               nm
#
#
############################################################################

MAIL_LIST1="warningalerts@email.com"
MAIL_LIST2="criticalalerts@email.com"


LOG=/oracle/logs/filesystem_alert.log

rm $LOG

sd=`date +"%H"`


# PRINT <PROD_SID> FILESYSTEM USAGE
diskstat_backup_pr=`df -h | grep /backup | awk '{print "<PROD_SID> " $6 " " $5 " Used"}'`
diskstat_oracle_pr=`df -h | grep /oracle$ | awk '{print "<PROD_SID> "  $6 " " $5 " Used"}'`
diskstat_oradata1_pr=`df -h | grep /oradata1 | awk '{print "<PROD_SID> " $6 " " $5 " Used"}'`
diskstat_oradata2_pr=`df -h | grep /oradata2 | awk '{print "<PROD_SID> " $6 " " $5 " Used"}'`
diskstat_oradata3_pr=`df -h | grep /oradata3 | awk '{print "<PROD_SID> " $6 " " $5 " Used"}'`

# PRINT <DR_SID> FILESYSTEM USAGE
DR_diskstat_backup_pr=`ssh mobbodbp1 df -h | grep /backup | awk '{print "<DR_SID> " $6 " " $5 " Used"}'`
DR_diskstat_oracle_pr=`ssh mobbodbp1 df -h | grep /oracle$ | awk '{print "<DR_SID> " $6 " " $5 " Used"}'`
DR_diskstat_oradata1_pr=`ssh mobbodbp1 df -h | grep /oradata1 | awk '{print "<DR_SID> " $6 " " $5 " Used"}'`
DR_diskstat_oradata2_pr=`ssh mobbodbp1 df -h | grep /oradata2 | awk '{print "<DR_SID> " $6 " " $5 " Used"}'`
DR_diskstat_oradata3_pr=`ssh mobbodbp1 df -h | grep /oradata3 | awk '{print "<DR_SID> " $6 " " $5 " Used"}'`

# COMPUTE <PROD_SID> FILESYSTEM USAGE
diskstat_backup=`df -h | grep /backup | awk '{sub(/%/,"",$5); print $5}'`
diskstat_oracle=`df -h | grep /oracle$ | awk '{sub(/%/,"",$5); print $5}'`
diskstat_oradata1=`df -h | grep /oradata1 | awk '{sub(/%/,"",$5); print $5}'`
diskstat_oradata2=`df -h | grep /oradata2 | awk '{sub(/%/,"",$5); print $5}'`
diskstat_oradata3=`df -h | grep /oradata3 | awk '{sub(/%/,"",$5); print $5}'`

# COMPUTE <DR_SID> FILESYSTEM USAGE
DR_diskstat_backup=`ssh mobbodbp1 df -h | grep /backup | awk '{sub(/%/,"",$5); print $5}'`
DR_diskstat_oracle=`ssh mobbodbp1 df -h | grep /oracle$ | awk '{sub(/%/,"",$5); print $5}'`
DR_diskstat_oradata1=`ssh mobbodbp1 df -h | grep /oradata1 | awk '{sub(/%/,"",$5); print $5}'`
DR_diskstat_oradata2=`ssh mobbodbp1 df -h | grep /oradata2 | awk '{sub(/%/,"",$5); print $5}'`
DR_diskstat_oradata3=`ssh mobbodbp1 df -h | grep /oradata3 | awk '{sub(/%/,"",$5); print $5}'`


# ALERTS ON <PROD_SID>

# Alert on /backup

if [ $diskstat_backup -gt 85 ]; then
   echo "WARNING: $diskstat_backup_pr" >> $LOG
elif [ $diskstat_backup -gt 95 ]; then
   echo "CRITICAL: $diskstat_backup_pr" >> $LOG
else
  echo "OKAY: $diskstat_backup_pr" >> $LOG
fi

 # Alert on /oracle

if [ $diskstat_oracle -gt 85 ]; then
    echo "WARNING: $diskstat_oracle_pr" >> $LOG
 elif [ $diskstat_oracle -gt 95 ]; then
    echo "CRITICAL: $diskstat_oracle_pr" >> $LOG
else
    echo "OKAY: $diskstat_oracle_pr" >> $LOG
fi

 # Alert on /oradata1

 if [ $diskstat_oradata1 -gt 85 ]; then
     echo "WARNING: $diskstat_oradata1_pr" >> $LOG
  elif [ $diskstat_oradata1 -gt 95 ]; then
     echo "CRITICAL: $diskstat_oradata1_pr" >> $LOG
  else
     echo "OKAY: $diskstat_oradata1_pr" >> $LOG
fi


# Alert on /oradata2

 if [ $diskstat_oradata2 -gt 85 ]; then
    echo "WARNING: $diskstat_oradata2_pr" >> $LOG
 elif [ $diskstat_oradata2 -gt 95 ]; then
    echo "CRITICAL: $diskstat_oradata2_pr" >> $LOG
 else
    echo "OKAY: $diskstat_oradata2_pr" >> $LOG
fi

# Alert on /oradata3

 if [ $diskstat_oradata3 -gt 85 ]; then
    echo "WARNING: $diskstat_oradata3_pr" >> $LOG
 elif [ $diskstat_oradata3 -gt 95 ]; then
    echo "CRITICAL: $diskstat_oradata3_pr" >> $LOG
 else
    echo "OKAY: $diskstat_oradata3_pr" >> $LOG
fi




#ALERTS ON <DR_SID>

# Alert on /backup

if [ $DR_diskstat_backup -gt 85 ]; then
   echo "WARNING: $DR_diskstat_backup_pr" >> $LOG
elif [ $DR_diskstat_backup -gt 95 ]; then
   echo "CRITICAL: $diskstat_backup_pr" >> $LOG
else
  echo "OKAY: $DR_diskstat_backup_pr" >> $LOG
fi

 # Alert on /oracle

if [ $DR_diskstat_oracle -gt 85 ]; then
    echo "WARNING: $DR_diskstat_oracle_pr" >> $LOG
 elif [ $DR_diskstat_oracle -gt 95 ]; then
    echo "CRITICAL: $DR_diskstat_oracle_pr" >> $LOG
else
    echo "OKAY: $DR_diskstat_oracle_pr" >> $LOG
fi

 # Alert on /oradata1

 if [ $DR_diskstat_oradata1 -gt 85 ]; then
     echo "WARNING: $DR_diskstat_oradata1_pr" >> $LOG
  elif [ $DR_diskstat_oradata1 -gt 95 ]; then
     echo "CRITICAL: $DR_diskstat_oradata1_pr" >> $LOG
  else
     echo "OKAY: $DR_diskstat_oradata1_pr" >> $LOG
fi


# Alert on /oradata2

 if [ $DR_diskstat_oradata2 -gt 85 ]; then
    echo "WARNING: $DR_diskstat_oradata2_pr" >> $LOG
 elif [ $DR_diskstat_oradata2 -gt 95 ]; then
    echo "CRITICAL: $DR_diskstat_oradata2_pr" >> $LOG
 else
    echo "OKAY: $DR_diskstat_oradata2_pr" >> $LOG
fi

# Alert on /oradata3

 if [ $DR_diskstat_oradata3 -gt 85 ]; then
    echo "WARNING: $DR_diskstat_oradata3_pr" >> $LOG
 elif [ $DR_diskstat_oradata3 -gt 95 ]; then
    echo "CRITICAL: $DR_diskstat_oradata3_pr" >> $LOG
 else
    echo "OKAY: $DR_diskstat_oradata3_pr" >> $LOG
fi





#Grep the Logfile for Alerts

if grep 'CRITICAL' $LOG;  then
  mail -a $LOG -s "CRITICAL: <PROD_SID>/<DR_SID> FILESYSTEM STATUS" $MAIL_LIST2 < $LOG
fi


if [ $sd -eq 8 ];  then

  mail -a $LOG -s "DAILY CHECK: <PROD_SID>/<DR_SID> FILESYSTEM STATUS" $MAIL_LIST1 < $LOG

fi